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Red Hat Enterprise Linux 8 RHSA-2021-2352 Important DoS in .NET Core

red hat
Calendar Grey June 8, 2021
Dist Redhat Esm H88
The .NET Core 3.1 update enhances security for Red Hat Enterprise Linux 8 by addressing vulnerabilities and implementing best practices for robust app protection
An update for .NET Core 3.1 is now available for Red Hat Enterprise Linux 8

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.
New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 3.1.116 and .NET Runtime 3.1.16.
Security Fix(es):
* dotnet: ASP.NET Core Client Disconnect Denial of Service (CVE-2021-31957)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Topics%20covered

Topics Covered

security advisory security update security fix Red Hat Enterprise Linux dotnet ASP.NET DoS

References

https://access.redhat.com/security/cve/CVE-2021-31957 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: dotnet3.1-3.1.116-1.el8_4.src.rpm
x86_64: aspnetcore-runtime-3.1-3.1.16-1.el8_4.x86_64.rpm aspnetcore-targeting-pack-3.1-3.1.16-1.el8_4.x86_64.rpm dotnet-apphost-pack-3.1-3.1.16-1.el8_4.x86_64.rpm dotnet-apphost-pack-3.1-debuginfo-3.1.16-1.el8_4.x86_64.rpm dotnet-hostfxr-3.1-3.1.16-1.el8_4.x86_64.rpm dotnet-hostfxr-3.1-debuginfo-3.1.16-1.el8_4.x86_64.rpm dotnet-runtime-3.1-3.1.16-1.el8_4.x86_64.rpm dotnet-runtime-3.1-debuginfo-3.1.16-1.el8_4.x86_64.rpm dotnet-sdk-3.1-3.1.116-1.el8_4.x86_64.rpm dotnet-sdk-3.1-debuginfo-3.1.116-1.el8_4.x86_64.rpm dotnet-targeting-pack-3.1-3.1.16-1.el8_4.x86_64.rpm dotnet-templates-3.1-3.1.116-1.el8_4.x86_64.rpm dotnet3.1-debuginfo-3.1.116-1.el8_4.x86_64.rpm dotnet3.1-debugsource-3.1.116-1.el8_4.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:2352-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2352
Issue date: 2021-06-08

Topic

An update for .NET Core 3.1 is now available for Red Hat Enterprise Linux8.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security update security fix Red Hat Enterprise Linux dotnet ASP.NET DoS

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - x86_64

Bugs Fixed

1966990 - CVE-2021-31957 dotnet: ASP.NET Core Client Disconnect Denial of Service

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